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IOP is an important factor that should be assessed at every ophthalmological examination. Optometrists and ophthalmologists normally use GAT. Other tonometers can be considered in certain cases, some of which can be used by ophthalmic technicians, nurses, or emergency medicine physicians. Communication among these specialists, who work as an interprofessional team, is critical so that ocular pressure data may be appropriately compared across time. To maintain uniformity of findings, IOP measurements may need to be remeasured across specialists over time in the management of patients. If the accuracy of a reading or device is in doubt, an alternate tonometry approach may be utilized to corroborate or dispute the reading. If IOP is not extremely high, symptoms are normally not present. An emergent intraocular pressure reading must be obtained when acute-angle closure glaucoma is suspected based on essential and severe signs and symptoms. A physician or nurse in the emergency room should consult with an ophthalmologist to verify the pressure on arrival. Treatment should be given to lower IOP in addition to conducting other procedures to save eyesight.